

❄️ Keep your diesel chill and your wallet fuller with NuDEF!
NuDEF Diesel Exhaust Fluid Additive & Stabilizer is engineered to lower the freezing point of DEF, prevent harmful crystallization, and protect critical SCR system components. Designed for up to 25 gallons of DEF, it ensures consistent fluidity and sensor accuracy, reducing maintenance costs and improving diesel engine efficiency even in extreme cold.














| ASIN | B0D5ZK5FX4 |
| Brand | NuDEF |
| Customer Reviews | 4.6 4.6 out of 5 stars (233) |
| Date First Available | 9 June 2024 |
| Item Weight | 290 g |
| Item model number | 197644138449 |
| Manufacturer | NuDEF |
| Manufacturer Part Number | 197644138449 |
| Model | NuDEF |
| Product Dimensions | 5.08 x 5.08 x 16.51 cm; 290 g |
A**R
Fonctionne très bien
S**D
If you drive a diesel that requires DEF you need this product now! It will save you hundreds to thousands of $$ because it prevents urea nidus crystals from forming. Once you have urea crystallization in your DEF tank it will always continue to be a problem. NuDEF breaks down the urea crystals that form. This reduces the use of DEF your vehicle is forced to cycle through by the sensors that monitor urea crystal formation. It saves you money on DEF and fuel. And it protects your vehicle.
V**Y
I’ve had diesel equipment for almost 30 years and the new truck has all the pollution crap on it. This year we were having a really cold winter and I was getting alarms about emissions problems. I read it could be due to the DEF freezing. I believed that was my issue so I purchased this product. I can say I have not had a single issue after I have added the product to the def. And for the record we have had several single digit days. It sucks we have to buy another product to keep our trucks running but this product seems to do the job! I’ll use next winter to avoid any problems.
M**.
Garbage it’ll down your DEF system and we all know that it takes 10 hours at $250 a hour just to figure out why it did coated sensors with something kind of crap seller just sent me in circles so here’s your review I had to give one star to post it but should be -100 stars take a chance I did for 4500$ thanks
D**S
I've been frustrated with my truck's DEF system for some time now...It seems that DEF fluid is wildly unstable (something they really don't tell you when buying a truck) and as a result, I've experienced my share of DEF system failures. Even when adding DEF fluid as recommended, the volatility of DEF fluid creates a seemingly perfect environment for DEF systems to fail when driving a diesel-powered truck like mine. A friend suggested I try using NuDEF...I was skeptical but figured I had nothing to lose. The dreaded DEF system light had returned again and before making yet another trip to my local dealership to once again be charged a fortune for a repair, I tried it. Wow! After mixing in NuDEF with my DEF fluid and driving for a short period of time, my DEF system light went off and my truck seemed to be a bit...happier! It's now been a few weeks and I have yet to see the DEF system light return and my truck has been performing perfectly. Thanks, NuDEF...You DEFinitely (see what I did there) have a customer for life!
Trustpilot
3 days ago
3 weeks ago